package secondStage.part6.方法引用类.引用类的实例方法;

/**
 * @ClassName: [MyString]
 * @Description:
 * @Author: [黄劲松]
 * @CreateDate: [2021-04-14]
 * @Version: [v1.0]
 */
public interface MyString {
    String mySubString(String s,int x,int y);
}
